Regenerative-furnace construction



Aug. 5 1924.

' 1,503,464 w. o. AMSLER r REGENERATIVB'EURRACE CONSTRUCTION I Filed May 21. 1920 2 Sheets-Sheet 1 WITNESSES l/VVE'IVTUI? MWW w. o. AMSLER REGENERATIVE FURNACE CONSTRUCTION Fild May 21. 1920 v 2 Sheets-Sheet .2

F 'IE.Z.

WITNESSES M/VE/VTOR V Patented Aug. 5, 19224.

WALTER o. AMSLER, or PITTSBURGH, rnnlvsynvaivm.

REGENERATIVE-FURNAGE GO-NSTRU'CTIONi Application aema 1920. semi No. 383,254. 1

- To (ZZZ whom it mag concern:

Be it known that I, WALTER O. AnisLER, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, haveinvented certain new and useful Improvements in Regenerative-Furnace Construction, of which the following is a specification.

This invention relates to improvements in regenerative and reversing furnaces, and particularly to furnaces of this type embody ing two gas regenerators, two air regenerators, and gas and air reversing valves.

Among the objects of the present invention are, to provide a simple and efiicient construction including separate and independent means for regulating the admission of gas and air tothe respective sides of the furnace, whereby an independent adjust ment of each side of the furnace may be effected to effecta great reduction of chimney draft losses; to eliminate the abrupt bends and friction creating gas and air passages, ports or lines now so generally employed in connection with the gas and air reversing valves; to do away with all liquid seals; and to provide a construction that may be built and operated at considerably less cost than heretofore.

In the accompanying drawings which illustrate an application of my invention,

Fig. 1 is a part horizontal sectional view and a part plan of a furnace structure embodying my invention;

Fig. 2, avertical sectional view taken on line 22 of Fig. 1; and

Fig. 3, a view similar to Fig.2 taken on line 33 of Fig. l.

Referring to the drawings, 2 designates the brickwork or masonry of aportio'n of a reversible regenerative furnace in which the gas flues, air fines, and chimney fines are located. 3 3 and 4.4L respectively designate gas and air regenerators for heating gas and air, as is usual in furnaces of this class.

As illustrated, 55 designate gas regenerator fiues, 6,6 air re'gen'erator fines, and T a chimney flue. The chimney fine as shown is dividedinto two passages a and b by a. partition wall 8. It will be noted that the gas flues 5 are disposed oppositely to each other, and that the air fiues 6 are simfilally disposed, and that the partition wall 3 extends between the respective and air ues.

y In the embodiment of my invention as shown, and as preferred, gas is conveyed to the furnace through a gasconduit 9, said conduit (being in communication withtwo independent gas boxes 10'1O through which gas is introduced to horizontally extending chambers 11""11. Thepas'sage of gas from the conduit to the gas boxes 10 10, and from thence to the respective sides of the :furnace through the respective chambersll,

is controlled by independently operable vegtieallyinovable valves 12. r

The boxesa e mounted (in a cover plate 13, and 114; and. 15 respectively represent hous ings designed to receive chain sheaves or wheels 16. Sheaves 16 are arranged in pairs,

and are respectively mounted on shafts 17 extending through and supported by the housings 14c and 15. i

The gas valve structure shown corresponds substantially to and constitutes the subject matter of a companion application Serial No. 383,255, filed May 21, 1920, and, as illustrated herein, includes two vertically movable slide valves 18 adapted to be eonjointly operated and moved in alternate directions. The valves are moved into open and closed positions by means of chains 19 and 20, said valves being mounted on vertically extend ing inclined and water 'cooled metallic seats 21. The valve seats are each formed with openings 22 and 23', the openings 22 registering with chambers 11 and valve 'cham; here 24:, and the openings 23 with ports 25 formed in the brick-work and leading to the divided-chimney flue 7, and communicating with the valve chambers 24. The valve seats extend upwardly through the cover plate 13 and are connected thereto and also with the respective housings.

Each of the air regen'erator lines at its end adjacent the ehjmne flue is enlarged to form a chamber 26, and each chamber 26 communicates with the chimney flue through "a port 27 and with an air admission flue 28 initted were chambers '26 is regulated dampers 3 0. e

The air reversing 'valves' 32, like the gas 7 through a port 29. The quantity of air adreversing valves, are located within the brick-work of the furnace, and, as shown, function to control the passage of an:

through the ports 29 leading to the air fines 33and arms 34, and are designed to be moved to alternately open and close the ports 27 and 29. Valves 82 are preferably of the form of a hinged or swinging door structure and control the passage of fluids from the air admission flue to chamber 26 and passage of fluids from the regenerators to the chimney flue, dampers 56 being particularly designed to permit more waste gases to pass through flues 6 than'through flues 5, and dampers 36 for regulating the chimney draft.

By providing the valves, dampers, and the arrangement of flues and ports as described, it will be seen that each side of the furnace is under-independent control and that it is not necessary to frequently adjust the gas and air admission valves and the chimney dampers due to varying .working conditions so often encountered on opposite sides of the furnace.

Attention is particularly called to the fact that I dispense with abrupt bends and curved passageways adjacent the gas and air reversing valves, and substitute therefor straight passageways. Thus, the chambers 11 and openings 22 in the gas valve structure are in line with the inner ends of gas flues 5 and arranged in the same horizontal plane. This is also true in regard to ports 27 and 29, that is, they are disposed in the same horizontal plane as the air flues 6, and are arranged to cause a direct flow of fluids to and from said flues 6.

By providing the partition wall in the chimney flue or by forming two separate chimney flues extendingbetween the oppositely located gas and air regenerative flues and between the gas and air valves, a simple and efiicient construction for preventing the hot gases attacking the respective gas and air regenerative valves is provided.

\Vhat I claim is:

.1. In a reversible regenerative furnace, the combination with gas and air reversing valves, of horizontally. disposed fluid passageways disposed adjacent said valves, the communicating fluid passages adjacent the gas valve being so arranged in linewith one another and in the same horizontal planes, that the flow of gas through the passagesis not deflected from its path of flow in proximity to the valve, and the communicating fluid passages adjacent the air valve being arranged in line with one another and in the same horizontal plane.

2. In a reversible. regenerative furnace having a brickwork structure, the combination with gas and air reversing valves, of horizontally disposed fluid passageways dis- P96d j cent Said valv es, the communicating fluid passages adjacent the gas valve ateach side thereof being arranged in line with one another and in the same horizontal plane, and the communicating fluid passages adjacent the air valve at each side thereof being arranged in line with one another and in the same horizontal plane, said reversin valves and passageways being located within the brick-work of the furnace structure.

3. In a reversible regenerative furnace, the combination with horizontal gas and air regenerative flues, horizontal gas supply passages, horizontal ports establishing com munication between the gas supply passage and gas regenerator flues, valves for said ports, horizontal chimney flues, horizontal ports establishing communication between the gas regenerator flues and chimney flues, said valve acting to close said secondnamed ports when the first named ports are open and vice versa, horizontal ports establishing communication between said air regenerator flues and the chimney flues, valves for opening and closing said ports, and means'for supplying air to said air regenerator flues when said valves are closed.

4. In a reversible regenerative furnace, the combination with horizontal gas and air regenerator flues, horizontal'gas supply passages, horizontal ports establishing communication between the gas supply passage and gas regenerator flues, valves for said ports, horizontal chimney flues, horizontal ports establishing communication between the gas regenerator fines and chimney flues, said valves acting to close said second named ports when the first named ports are open and vice versa, horizontal ports establishing communication between said air regenerator flues and the chimney flues, valves for opening and closing said ports, horizontally disposed air passages opening into the air regenerator flues for supplying air thereto, and valves in said passages for controlling the flow of air into the air regenerator flues.

5. In a reversible regenerative furnace, independent means on each side of the furnace for independently controlling the admission of gas and air used on each side of the furnace, jointly operable valves for admitting gas to one side when the gases from the other side are passing to a chimney, jointly operable valves for closing the escape of, air from one side of the furnace when air is being admitted to that side and when the other side is open to a chimney, and independently operable chimney control valves for the two sides.

6. In a reversible furnace, a chimney flue, a gas regenerator flue opening into said chimney flue at each side thereof through a port, an airregenerator flue opening into said chimney at each side thereof through a port, gas supply passages communicating wit-l the regener fiqr flu'es, a valve on -one side of the chimney fine adapted to close either the port to the chimney fine or to thegas passage, a similar valve on the other side of the flue, means for operating said valves jointly to open the gas supply passage on one side Whenclosingthe port to the chimney fine on the other side, valves for closing the ports from the air regenerator fines to the chimney fines, operating means for opening one valve while closing the other, and valves for admitting air to the air regenerator fines.

I 7.. In a reversible regenerative furnace, the combination with gas reversing valves and air reversing valves, a divided chimney, independent gas and air admission valves for admitting gas and air to one side of the furnace, and independent air and gas admission valves for admitting air and gas to the opposite side of the furnace where by an independent control for each side of the furnace is effected, the gas reversing valves for opposite sides of the furnace being jointly operable and the air reversing valves at opposite sides of thefurnace being jointly operable, said divided chimney protecting valves on one sidefrom contact with escaping gases from the other side when the reversing valves on the other side are open to the chimney.

8. In a reversible furnace,v a chimney fine, a gas regenerator flue opening into said chimney flue at each side thereof through a port, an air regenerator flue opening into said chimney at each side thereof through a port, gas supply passages communicating with the gas regenerator fines, independent, separable operable valves for controlling the supply of gas to said passages, a valve on one side of the chimney flue adapted to close either the port to the chimney fine or to the gas passage, a similar valve on the other side of the fiue, means for operating said valves jointly to open the gas supply passageon one side when closing the port to the chimney fine on the other side, valves for closing the ports from the air regenera tor fines to the chimney fines, operating means for opening one valve while closing the other, and valves for admitting air to the air regenerator flues.

9. In a reversible regenerative furnace, oppositely disposed valve controlled gas regenerator fiues, a chimney flue having a partition wall therein disposed between said gas regenerator fines, and oppositely disposed valve controlled air regenerator fines in communication with the chimney flue, said partition vwall being also disposed between said air flues. Y

10. In a reversible regenerative furnace, a gas supply chamber, a chimney fine disposed below the said chamber, a partition wall in the ch m y fl e, opp si ely d p s d regenerator fiues, oppositely disposed which said conduit connects through ports, a

chimney fine between said opposed gas regenerator fines and in communication therewith through ports below said first ports, a pair of valves, one for each of the opposed gas regenerator fines movable across its respective gas and chimney fine ports, opposed air regenerator fines besides the gas regenerator fines opening into the chimney flue through opposed ports, separate air supply passages for each air regenerator flue opening into said flnes through air inlet ports adjacent their respective chimney ports, and a valve in each regenerator flue movable to position to close either the port to the chimney or the air inlet port.

12. In a flue and valve construction for reversible regenerative furnaces, the combination with air and gas regenerators, a chimney fine between and extending parallel with the regenerators, air and gas regenerator fines having their ends adjacent the chimney flue arranged within the masonry of the furnace, and air and gas valves disposed and operable within the said masonry.

13. In a reversible furnace. a chimney flue, a pair of gas regenerator fines opening into said chimney flue through horizontal ports, one gas regenerator flue being disposed opposite the other, a similarly arranged pair of air regenerator flues opening into said chimney fines through horizontal ports, gas supply passages above the chimnev flue opening into the gas regenerator fines through horizontal ports, valves for opening and closing all of said ports, and valves in the air regenerator fiues for controlling the admission of air thereto.

14. In a reversible furnace, a chimney fine, a pair of gas regenerator fines opening into said chimney flue through horizontal ports, one gas regeneratorfine being disposed opposite the other, a similarly arranged pair of air regenerator fines opening into said chimney fines through horizontal ports, gas supply passages above the chimney fine opening into the gas regenerator fines through horizontal ports, valves for opening and closing all of said ports, and valves in the air regenerator fines for controlling the admission. of air thereto, all 'of said valves being so arranged as to be out of direct path of a flow of gas when they are open.

ranged pair of air regenerator flues opening for controlling the admission of air thereto. into said chimney fiues through horizontal In testimony whereof I affix my signature 1 ports, gas supply passages above the chilnin presence of two Witnesses.

ney flue opening into the gas regenerator WALTER O AMSLER flues through horizontal ports, a sin 1e valve in each of the gas regenerator ues for Witnesses: opening one of the ports and closing the J. M. GEOGHEGAN, other and valves in the a1r regenerator flues LOIS WINEMAN. 

